The Algerian Islamist Abdullah Anas, 'perhaps the greatest warrior of the Afghan Arabs', fought the Soviet Union for a decade. As one of the earliest Arabs to join the Afghan jihad, he counted as brothers-in-arms the future icons of Al-Qaeda's global war, from Abdullah Azzam to Osama bin Laden to Omar Abdel-Rahman, and befriended key Afghan jihadi figures such as Gulbuddin Hekmatyar and Ahmad Shah Massoud, the Lion of Panjshir. To the Mountains is an intimate portrait of this brut...